Non-Captive Linear Motor
Non-captive linear stepper actuators use a lead screw design where the screw rotates freely, so an external guide or mechanism is typically needed to keep the moving element from turning. This configuration can offer a compact footprint in certain applications, depending on motor size and guidance arrangement.
Non-captive stepper motor actuators are often specified for stroke lengths in the 30–200 mm range, varying by model. Compared with some external linear actuator layouts, certain non-captive configurations may accommodate small coaxial misalignment during installation more readily; allowable mounting tolerances should be verified in the mechanical drawings or product datasheet.
Typical applications include valve actuation, inspection and test fixtures, semiconductor handling equipment, fluid dispensing systems, laboratory analyzers, and camera focusing mechanisms.
